Sites and apps similar to hohli include draw.io, which is free and open source. Other options are Penpot, LibreOffice - Draw, Dia and yEd Graph Editor. There's no shortage of Mind Mapping Tools like hohli, with more than 25 alternatives for Mac, Windows, Linux, iPad and Android.
VSD Viewer opens Visio drawings directly on a computer without conversion on external Web Servers. Viewing Visio documents is as simple as dragging and dropping off files (with a .vsd, .vsdx, .vdx extension) to the Application window.
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Grapholite is a powerful online solution for the creation of flowcharts, org charts, mind maps, Venn charts, web site structures, etc. Can be used online and offline
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ConceptDraw DIAGRAM v14 is the only product that supports Visio legacy, runs on macOS and Windows, and is a perpetual license. Import/Export VDX, VSDX, VSSX and Import VSD, VSS files.
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Enter your lists here. Use either the "text area" or "file upload" to assign your list to the diagram. Files should be delimiter ASCII files (Any white space like space, tab, or line break, and comma).
KeyLines is a JavaScript toolkit used by developers to build powerful network visualization applications, quickly.
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IYOPRO, Improve your Processes, is a professional online BPM and workflow system that utilizes the BPMN 2.0 standard.
MockupTiger is a web based application that helps you to build fluid wireframes, mockups or prototypes for your next web application or desktop software.
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Neoclipse is a standalone workbench application to interact with Neo4j (database directory or server). It supports Cypher, index searches, visualisation, graph updates.
Generate diagrams from text faster than ever and facilitate stakeholders involvement via animation and online collaboration.
Use simple text to quickly create and share diagrams with your team. Improve your documentation, planning and everyday communication with powerful tools for automatic diagram generation.
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